CN111846211A - A multi-rotor unmanned aerial vehicle and method of using the same - Google Patents

Abstract

The application provides a multi-rotor unmanned aerial vehicle and a using method thereof, the multi-rotor unmanned aerial vehicle comprises a machine body, a machine arm component, an image acquisition component and a landing gear component, the machine body comprises a cover and a shell of an integrated structure, the machine body shell and the cover form a closed space for preventing rainwater from entering the interior of the machine body, the machine arm component comprises a machine arm, a first motor, a rain cover and a propeller, the first motor is covered by the rain cover in the horizontal direction for preventing rainwater from entering the interior of the first motor, the image acquisition component comprises a load mounting rack and a pan-tilt camera, the load mounting rack is connected with the bottom of the machine body, the pan-tilt camera is arranged on the load mounting rack for carrying out image acquisition on a power transmission line, the landing gear component comprises a landing gear fixing seat, an aluminum alloy bracket, a support, the steering engine rotates in the ascending plane of the multi-rotor unmanned aerial vehicle to support the carbon tube so as to achieve the purpose of retracting the support carbon tube.

Description

A multi-rotor unmanned aerial vehicle and method of using the same

technical field

The present application relates to the field of power transmission line inspection equipment, in particular to a multi-rotor unmanned aerial vehicle and a method of using the same.

Background technique

A UAV is an aircraft with a power unit that does not carry an operator. It uses aerodynamic force to overcome its own weight. It can fly autonomously or remotely, and can also be used once or repeatedly. It has a wide range of applications in scientific research, civil or military fields. UAVs include fixed-wing UAVs and multi-rotor UAVs. Compared with fixed-wing UAVs, multi-rotor UAVs have the advantages of simple structure, flexible control, easy operation, vertical take-off and landing, etc., which can meet the requirements of transmission lines. inspection requirements.

At present, the fuselage of a multi-rotor UAV generally includes a casing, an arm and a landing gear. The arm is fixedly connected to the casing, and the landing gear is fixedly connected to the casing or the arm. The casing and the arm are mostly plastic materials. , When assembling the multi-rotor UAV, rely on the tension of multiple plastic parts to fit the slot or connect the multiple plastic parts into a complete multi-rotor UAV shell and arm through screws, and the tail end of the arm is installed with power The device, the power device includes a first motor and a blade. During the inspection of the transmission line performed by the multi-rotor UAV, the image acquisition device carried by the UAV is connected to the bottom of the UAV and is located between the two landing gears. The onboard image acquisition equipment flies in the air.

However, when the assembled multi-rotor UAV performs the inspection task of the transmission line in rainy days, the rainwater will enter the inside of the shell along the gaps between the plastic parts. If the circuit is short-circuited, rainwater will also enter the motor, resulting in a short-circuit of the motor's internal circuit. The landing gear of the multi-rotor UAV is basically fixed, and the retraction and lowering of the landing gear cannot be realized, which increases the resistance of the multi-rotor UAV when it is flying, and shortens the flight time of the multi-rotor UAV. The image acquisition of the camera is hindered, resulting in a small shooting range, which affects the inspection effect of the transmission line.

SUMMARY OF THE INVENTION

The present application provides a multi-rotor UAV and a method of using the same, so as to solve the problems in the prior art that the rainwater causes the short circuit of the multi-rotor UAV casing and the internal circuit of the motor, and the fixed landing gear causes the camera to have a small shooting range.

The application provides a multi-rotor unmanned aerial vehicle. The multi-rotor unmanned aerial vehicle adopts a remote control flight mode and is used for inspection of power transmission lines. The multi-rotor unmanned aerial vehicle includes: a body, an arm assembly, and an image acquisition assembly and landing gear assemblies;

The body includes a body shell and a cover, the body shell is an integral structure, the cover is hinged to the body shell, and the body shell is provided with a quick-release mounting piece, and the quick-release mounting piece is used for The body shell and the machine cover form a closed space, and a plurality of connecting ends are evenly distributed on the peripheral side of the body shell, and the connecting ends are used to connect the machine arm assembly;

The arm assembly includes an arm, a first motor, a rain cover and a propeller, the arm is a hollow structure, and the end of the arm is provided with a fixing port and a nut, and the nut is sleeved at the place. the outer side of the fixing port, the fixing port is sleeved on the connecting end, the nut is used to tighten the fixing port, the first motor is located on the end of the arm away from the fixing port, The output end of the first motor is fixedly connected to the rain cover and the propeller in turn, the rain cover covers the first motor in the horizontal direction, and the propeller is used for the multi-rotor unmanned aerial vehicle. provide flight power;

The image acquisition assembly includes a load mounting bracket and a pan-tilt camera, the payload mounting bracket is connected to the bottom of the body through a mounting plate, the pan-tilt camera is arranged on the payload mounting bracket, and the pan-tilt camera is used for Image acquisition of transmission lines;

The landing gear assembly includes a landing gear fixed seat, an aluminum alloy bracket, a supporting carbon tube and a steering gear, the landing gear fixed seat is sleeved with the connecting end, and the landing gear assembly is fixedly connected to the landing gear through the landing gear fixed seat. the body, the aluminum alloy bracket is located between the landing gear fixing seat and the supporting carbon tube, the supporting carbon tube is a T-shaped structure, and the supporting carbon tube is hinged to the landing gear fixing seat through the aluminum alloy bracket , the steering gear is arranged on the aluminum alloy bracket, the steering gear is used to rotate the supporting carbon tube in the ascending plane of the multi-rotor UAV, and the landing gear fixing seat is provided with a GPS antenna and A picture number transmission antenna, the GPS antenna is used to determine the position of the multi-rotor UAV, and the picture number transmission antenna is used to transmit the images collected by the PTZ camera.

Optionally, the contact part of the machine cover and the body shell is provided with a rubber strip, and the rubber strip is used to seal the contact part of the machine cover and the body shell.

Optionally, a water retaining strip is provided on the bottom of the peripheral side of the body.

Optionally, the body shell, the machine cover, the machine arm and the propeller are all made of resin-based carbon fiber.

Optionally, the rain cover is made of nylon fiber-reinforced material.

Optionally, an electronic governor is provided inside the arm, and the electronic governor is used to regulate the speed of the first motor.

Optionally, the electronic governor is a foc sine wave electronic governor.

Optionally, both ends of the supporting carbon tube and the ground contact portion are provided with rubber sleeves.

Optionally, the load mounting frame is provided with a second motor and a third motor, the output end of the second motor is fixedly connected to the mounting plate, and the second motor is used to drive the load mounting frame to be perpendicular to the load mounting frame. The multi-rotor UAV rotates in the plane of the ascending direction, the output end of the third motor is fixedly connected to the pan-tilt camera, and the third motor is used to drive the pan-tilt camera to be parallel to the multi-rotor. The man-machine rotates in the plane of the ascending direction.

The application also provides a method for using a multi-rotor unmanned aerial vehicle, the method comprising:

The cover is closed on the body shell through the quick-release mounting part to form the body;

Sleeve the landing gear assembly on the connecting end of the body through the landing gear fixing seat;

Sleeve the arm assembly on the connecting end through the fixing port, and tighten the fixing port by rotating the nut;

Fix the load mounting frame of the image acquisition assembly on the bottom of the body through the mounting plate;

Start the first motor to drive the propeller to rotate;

During the process of the multi-rotor drone rising to the target location, the steering gear rotates and supports the carbon tube along the rising direction of the multi-rotor drone;

When the multi-rotor drone reaches the target location, the second motor drives the load mounting frame to rotate in a plane perpendicular to the rising direction of the multi-rotor drone, and the third motor drives the pan-tilt camera to rotate parallel to the direction of the multi-rotor drone. The multi-rotor UAV is rotated in the plane of the rising direction, so that the pan-tilt camera is aimed at the transmission line;

After the multi-rotor UAV completes the inspection of the transmission line, the multi-rotor UAV returns to the target location, and the steering gear rotates and supports the carbon tube along the descending direction of the multi-rotor UAV;

After the multi-rotor UAV landed on the ground, the first motor was turned off.

The present application provides a multi-rotor UAV and a method of using the same. The multi-rotor UAV includes a body, an arm assembly, an image acquisition assembly and a landing gear assembly, and the body includes a cover and an integrally structured outer shell, The body shell and the cover form a closed space to prevent rainwater from entering the interior of the body. The arm assembly includes a machine arm, a first motor, a rain cover and a propeller, and the rain cover covers all parts in the horizontal direction. The first motor prevents rainwater from entering the interior of the first motor. The image acquisition assembly includes a load mount and a pan-tilt camera. The payload mount is connected to the bottom of the body, and the pan-tilt camera is installed at the Image acquisition is performed on the transmission line on the load mounting frame, and the landing gear assembly includes a landing gear fixing seat, an aluminum alloy bracket, a supporting carbon tube and a steering gear, and the steering gear rotates in the ascending plane of the multi-rotor UAV. The supporting carbon tubes are used to achieve the purpose of storing the supporting carbon tubes.

Description of drawings

In order to illustrate the technical solutions of the present application more clearly, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, without creative work, the Additional drawings can be obtained from these drawings.

Fig. 1 is the structural representation of a kind of multi-rotor unmanned aerial vehicle provided by the application;

2 is a schematic diagram of the body structure of a multi-rotor unmanned aerial vehicle provided by the application;

3 is a schematic structural diagram of an arm assembly of a multi-rotor unmanned aerial vehicle provided by the application;

4 is a schematic structural diagram of an image acquisition assembly of a multi-rotor unmanned aerial vehicle provided by the application;

5 is a schematic structural diagram of a landing gear assembly of a multi-rotor unmanned aerial vehicle provided by the application;

FIG. 6 is a schematic flowchart of a method for using a multi-rotor unmanned aerial vehicle provided by the present application.

Among them, 1-body, 2-arm assembly, 3-image acquisition assembly, 4-landing gear assembly, 11-body shell, 111-quick release mounting piece, 12-machine cover, 13-connecting end, 14-plastic strip , 15-water retaining strip, 21-arm, 211-fixed mouth, 212-nut, 22-first motor, 23-rainproof cover, 24-propeller, 25-electronic governor, 31-load mounting bracket , 311-Second Motor, 312-Third Motor, 32-Gimbal Camera, 41-Landing Gear Mount, 42-Aluminum Bracket, 43-Support Carbon Tube, 431-Rubber Cover, 44-Servo, 45- GPS antenna, 46-image number transmission antenna.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The application provides a multi-rotor unmanned aerial vehicle. The multi-rotor unmanned aerial vehicle adopts a remote control flight mode and is used for inspection of power transmission lines. Referring to FIG. 1, the multi-rotor unmanned aerial vehicle includes: a body 1, an arm Assembly 2 , image acquisition assembly 3 and landing gear assembly 4 .

1 to 2, the body 1 includes a body shell 11 and a machine cover 12, the body shell 11 is an integral structure, and the interior of the body shell 11 is bonded with a carbon fiber laminate with a room temperature curing adhesive, as the The reinforced structure of the body shell 11 and the installation position for the flight control system module and the battery are provided. The cover 12 is hinged to the body shell 11. The body shell 11 is provided with a quick release mounting member 111. The mounting member 111 is preferably a rectangular sheet-like structure. The quick-release mounting member 111 is rotatably connected to the body shell 11. When the quick-release mounting member 111 is rotated at a certain angle, the quick-release mounting member 111 contacts the machine. The cover 12, the quick-release mounting member 111 is used to form a closed space between the body shell 11 and the machine cover 12, when the quick-release mounting member 111 is rotated at a certain angle, the quick-release mounting member 111 is separated from the place. The cover 12 is opened to facilitate quick battery replacement. A plurality of connecting ends 13 are evenly distributed on the peripheral side of the casing 11 , and the connecting ends 13 are used to connect the arm assembly 2 .

Referring to FIG. 3 , the arm assembly 2 includes an arm 21 , a first motor 22 , a rain cover 23 and a propeller 24 , the arm 21 is a hollow structure, and the end of the arm 21 is provided with a fixing port 211 and a nut 212, the nut 212 is sleeved on the outer side of the fixing port 211, and the outer side of the fixing port 211 is provided with an outer thread matching the inner thread of the nut 212, the fixing port 211 Sleeve the connection end 13, the nut 212 rotates to tighten the fixing port 211, the first motor 22 is located on the end of the arm 21 away from the fixing port 211, the first motor The output end of 22 is fixedly connected to the rain cover 23 and the propeller 24 in turn, the rain cover 23 covers the first motor 22 in the horizontal direction, and the first motor 22 drives the rain cover 23 Rotating, the rainwater falling on the rain cover 23 will be thrown out and will not flow into the inside of the first motor 22 to protect the normal operation of the first motor 22 and ensure that the multi-rotor drone is in a rainy environment. The propeller 24 is used to provide flying power for the multi-rotor UAV.

Referring to FIG. 4 , the image acquisition assembly 3 includes a load mount 31 and a pan-tilt camera 32 , the payload mount 31 is connected to the bottom of the body 1 through a mounting plate 33 , and the pan-tilt camera 32 is provided on the payload On the mounting frame 31, the pan-tilt camera 32 is used for image acquisition of the power transmission line.

Referring to FIG. 5 , the landing gear assembly 4 includes a landing gear fixing seat 41 , an aluminum alloy bracket 42 , a supporting carbon tube 43 and a steering gear 44 , the landing gear fixing seat 41 is sleeved on the connecting end 13 , and the landing gear The assembly 4 is fixedly connected to the body 1 through the landing gear fixing seat 41, and the aluminum alloy bracket 42 is located between the landing gear fixing seat 41 and the supporting carbon tube 43, and the supporting carbon tube 43 is a T-shaped structure, so The supporting carbon tube 43 is hinged to the landing gear holder 41 through the aluminum alloy bracket 42 , the steering gear 44 is arranged on the aluminum alloy bracket 42 , and the steering gear 44 is used for the multi-rotor without The supporting carbon tube 43 is rotated in the ascending plane of the man-machine, and during the ascending process of the multi-rotor drone, the steering gear 44 rotates the supporting carbon tube 43 in the ascending plane of the multi-rotor drone so as to retract. When the supporting carbon tube 43 is lifted, the pan-tilt camera 32 does not receive the influence of the supporting carbon tube 43, the pan-tilt camera 32 has a wide shooting range, and the landing gear mount 41 is provided with a GPS antenna 45 and A picture number transmission antenna 46 , the GPS antenna 45 is used for determining the position of the multi-rotor UAV, and the picture number transmission antenna 46 is used for transmitting the images collected by the pan-tilt camera 32 .

Referring to FIG. 2 , in order to enhance the waterproof effect of the body, the contact portion of the cover 12 and the body shell 11 is provided with a rubber strip 14 , and the rubber strip 14 is used to seal the cover 12 and the body shell 11 Contact parts.

In a rainy day environment, when the multi-rotor UAV patrols, the rainwater flows along the outline of the body 1 to the bottom of the body 1, and then may flow to the load mounting frame 31 and the pan-tilt camera 32. In order to affect the normal operation of the pan-tilt camera 32, a water blocking strip 15 is provided at the bottom of the peripheral side of the body 1, the water blocking strip 15 surrounds the load mounting frame 31, and rainwater flows to the water blocking strip 15. The strip 15 will naturally drip, and the water retaining strip 15 protects the gimbal camera 32 from rain.

The body shell 11 , the cover 12 , the arm 21 and the propeller 24 are all made of resin-based carbon fiber, and the resin-based carbon fiber material can ensure that the overall strength of the multi-rotor drone remains unchanged, reducing the need for the multi-rotor unmanned aerial vehicle. The overall weight of the aircraft extends the flight time.

The rain cover 23 is preferably made of nylon fiber-reinforced material. The nylon fiber-added material has light weight and good mechanical strength, and the rain cover 23 will not be broken when rotating at high speed.

In order to control the flying speed of the multi-rotor UAV, the arm 21 is provided with an electronic governor 25, and the electronic governor 25 is used to adjust the speed of the first motor 22. The governor 25 is a foc sine wave electronic governor.

The two ends of the supporting carbon tube 43 and the ground contact part are provided with rubber sleeves 431. When the multi-rotor UAV lands, the rubber sleeves 431 can play a buffer role, reducing the multi-rotor UAV and the ground. Vibration after ground contact.

Referring to FIG. 4 , the load mounting frame 31 is provided with a second motor 311 and a third motor 312 , the output end of the second motor 311 is fixedly connected to the mounting plate 33 , and the second motor 311 is used to drive the The load mounting frame 31 rotates 360° in a plane perpendicular to the ascending direction of the multi-rotor UAV, the output end of the third motor 312 is fixedly connected to the gimbal camera 32, and the third motor 312 is used for driving The pan-tilt camera 32 rotates 360° in a plane parallel to the ascending direction of the multi-rotor UAV.

The application provides a multi-rotor UAV, the multi-rotor UAV includes a body 1, an arm assembly 2, an image acquisition assembly 3 and a landing gear assembly 4, and the body 1 includes a cover 12 and an integrated structure. The casing 11, the body casing 11 and the cover 12 form a closed space to prevent rainwater from entering the interior of the body 1, and the arm assembly 2 includes an arm 21, a first motor 22, a rain cover 23 and a propeller 24, The rain cover 23 covers the first motor 22 in the horizontal direction to prevent rainwater from entering the interior of the first motor 22. The image capture assembly 3 includes a load mounting frame 31 and a pan-tilt camera 32. The load The mounting frame 31 is connected to the bottom of the body 1 , the pan-tilt camera 32 is installed on the load mounting frame 31 to capture images of the power transmission line, and the landing gear assembly 4 includes a landing gear fixing seat 41 and an aluminum alloy bracket 42 , a supporting carbon tube 43 and a steering gear 44, the steering gear 44 rotates the supporting carbon tube 43 in the ascending plane of the multi-rotor UAV to achieve the purpose of retracting the supporting carbon tube.

The present application provides a method of using a multi-rotor unmanned aerial vehicle. Referring to FIG. 6 , the method of using the multi-rotor unmanned aerial vehicle includes:

In step S1, the cover 12 is closed on the body shell 11 through the quick-release mounting member 111 to form the body 1.

The quick-release mounting member 111 is preferably a rectangular sheet-like structure, and the quick-release mounting member 111 is rotatably connected to the body shell 11. When the quick-release mounting member 111 rotates at a certain angle, the quick-release mounting member 111 Contact the cover 12 , the cover 12 is closed on the body shell 11 to form the body 1 , and the quick-release mounting member 111 is rotated at a certain angle so that the quick-release mounting member 111 is separated from the cover 12 , it is convenient to replace the battery in the casing 11 of the body.

Step S2, the landing gear assembly 4 is sleeved on the connecting end 13 of the body 1 through the landing gear fixing seat 41 .

A plurality of connecting ends 13 are evenly distributed on the peripheral side of the body 1. The landing gear assembly 4 includes a landing gear fixing seat 41, an aluminum alloy bracket 42, a supporting carbon tube 43 and a steering gear 44. There are 41 sets of the landing gear fixing seat. Connected to the connecting end 13 to fix the landing gear assembly 4 on the body 1 .

Step S3 , the arm assembly 2 is sleeved on the connecting end 13 through the fixing port 211 , and the fixing port 211 is tightened by rotating the nut 212 .

The arm assembly 2 includes an arm 21, a first motor 22, a rain cover 23 and a propeller 24, the arm 21 is a hollow structure, and the end of the arm 21 is provided with a fixing port 211 and a nut 212 , the nut 212 is sleeved on the outer side of the fixing port 211, the outer side of the fixing port 211 is provided with an external thread that matches the inner thread of the nut 212, and the fixing port 211 is sleeved with the Connecting the end 13, the nut 212 rotates to tighten the fixing port 211.

Step S4 , the load mounting frame 31 of the image capturing assembly 3 is fixed on the bottom of the body 1 through the mounting plate 33 .

The image capturing assembly 3 includes a load mounting frame 31 and a pan-tilt camera 32 , the pan-tilt camera 32 is arranged on the load mounting frame 31 , and the pan-tilt camera 32 captures images of the power transmission line.

Step S5, start the first motor 22 to drive the propeller 24 to rotate.

In step S6, during the process of the multi-rotor drone rising to the target location, the steering gear 44 rotates and supports the carbon tube 43 along the rising direction of the multi-rotor drone.

In this step, the supporting carbon tube 43 is retracted to prevent the supporting carbon tube 43 from affecting the image capture of the power transmission line by the pan-tilt camera 32 .

Step S7, when the multi-rotor drone reaches the target location, the second motor 311 drives the load mounting frame 31 to rotate in a plane perpendicular to the rising direction of the multi-rotor drone, and the third motor 312 drives the cloud The stage camera 32 is rotated in a plane parallel to the ascending direction of the multi-rotor UAV, so that the pan-tilt camera 32 is aligned with the power transmission line.

In this step, the pan-tilt camera 32 can rotate 360° both in a plane perpendicular to the ascending direction of the multi-rotor UAV and in a plane parallel to the ascending direction of the multi-rotor UAV.

In step S8, after the multi-rotor UAV completes the inspection of the transmission line, the multi-rotor UAV returns to the target location, and the steering gear 44 rotates and supports the carbon tube 43 along the descending direction of the multi-rotor UAV. .

In this step, the supporting carbon tubes 43 are put down, so that the multi-rotor UAV is lowered to the ground.

Step S9, after the multi-rotor UAV landed on the ground, the first motor 22 is turned off.

The present application has been described in detail above with reference to the specific embodiments and exemplary examples, but these descriptions should not be construed as a limitation on the present application. Those skilled in the art understand that, without departing from the spirit and scope of the present application, various equivalent replacements, modifications or improvements can be made to the technical solutions and embodiments of the present application, which all fall within the scope of the present application. The scope of protection of the present application is determined by the appended claims.

Claims (10)

1. The utility model provides a many rotor unmanned aerial vehicle, many rotor unmanned aerial vehicle adopts the remote control flight mode for patrol and examine transmission line, its characterized in that, many rotor unmanned aerial vehicle includes: the robot comprises a machine body (1), a machine arm assembly (2), an image acquisition assembly (3) and a landing gear assembly (4);

the engine body (1) comprises an engine body shell (11) and a machine cover (12), the engine body shell (11) is of an integrated structure, the machine cover (12) is hinged to the engine body shell (11), quick-release mounting parts (111) are arranged on the engine body shell (11), the quick-release mounting parts (111) are used for enabling the engine body shell (11) and the machine cover (12) to form a closed space, a plurality of connecting ends (13) are uniformly distributed on the peripheral side of the engine body shell (11), and the connecting ends (13) are used for connecting the engine arm assembly (2);

the horn component (2) comprises a horn (21), a first motor (22), a rain cover (23) and a propeller (24), the horn (21) is of a hollow structure, a fixing opening (211) and a nut (212) are arranged at the end part of the horn (21), the nut (212) is sleeved outside the fixed opening (211), the fixed opening (211) is sleeved with the connecting end (13), the nut (212) is used for tightening the fixing opening (211), the first motor (22) is positioned at the end part of the machine arm (21) far away from the fixing opening (211), the output end of the first motor (22) is sequentially and fixedly connected with the rain cover (23) and the propeller (24), the rain cover (23) covers the first motor (22) in the horizontal direction, and the propeller (24) is used for providing flight power for the multi-rotor unmanned aerial vehicle;

the image acquisition assembly (3) comprises a load mounting frame (31) and a pan-tilt camera (32), the load mounting frame (31) is connected with the bottom of the machine body (1) through a mounting plate (33), the pan-tilt camera (32) is arranged on the load mounting frame (31), and the pan-tilt camera (32) is used for acquiring images of the power transmission line;

the landing gear component (4) comprises a landing gear fixing seat (41), an aluminum alloy support (42), a support carbon tube (43) and a steering gear (44), the landing gear fixing seat (41) is connected with the connecting end (13) in a sleeved mode, the landing gear component (4) is fixedly connected with the machine body (1) through the landing gear fixing seat (41), the aluminum alloy support (42) is located between the landing gear fixing seat (41) and the support carbon tube (43), the support carbon tube (43) is of a T-shaped structure, the support carbon tube (43) is hinged to the landing gear fixing seat (41) through the aluminum alloy support (42), the steering gear (44) is arranged on the aluminum alloy support (42), the steering gear (44) is used for rotating the support carbon tube (43) in the ascending plane of the multi-rotor unmanned aerial vehicle, and a GPS antenna (45) and a map number transmission antenna (46) are arranged on the, the GPS antenna (45) is used for determining the position of the multi-rotor unmanned aerial vehicle, and the image transmission antenna (46) is used for transmitting the image collected by the pan-tilt camera (32).

2. A multi-rotor drone according to claim 1, characterized in that the cover (12) and the body-shell (11) contact portion are provided with an adhesive strip (14), the adhesive strip (14) being intended to seal the cover (12) and the body-shell (11) contact portion.

3. A multi-rotor drone according to claim 1, characterized in that the circumference bottom of the body (1) is provided with water bars (15).

4. A multi-rotor drone according to claim 1, characterized in that the airframe casing (11), the canopy (12), the horn (21) and the propellers (24) are all resin-based carbon fibre material.

5. A multi-rotor drone according to claim 1, wherein the rain hood (23) is of nylon plus fibre material.

6. A multi-rotor drone according to claim 1, characterized in that the inside of the horn (21) is provided with an electronic governor (25), the electronic governor (25) being used to regulate the speed of the first motor (22).

7. Multi-rotor drone according to claim 6, characterized in that the electronic governor (25) is a foc sine wave electronic governor.

8. A multi-rotor drone according to claim 1, characterized in that the two ends of the ground contact portion of the support carbon tubes (43) are provided with rubber sleeves (431).

9. A multi-rotor drone according to claim 1, wherein the load mount (31) is provided with a second motor (311) and a third motor (312), the output of the second motor (311) being fixedly connected to the mounting plate (33), the second motor (311) being configured to drive the load mount (31) to rotate in a plane perpendicular to the direction of ascent of the multi-rotor drone, the output of the third motor (312) being fixedly connected to the pan-tilt camera (32), the third motor (312) being configured to drive the pan-tilt camera (32) to rotate in a plane parallel to the direction of ascent of the multi-rotor drone.

10. A method of using a multi-rotor drone, applied to a multi-rotor drone according to any one of claims 1 to 9, characterized in that it comprises:

the machine cover (12) is closed on the machine body shell (11) through the quick-release mounting piece (111) to form the machine body (1);

sleeving a landing gear assembly (4) on a connecting end (13) of the machine body (1) through a landing gear fixing seat (41);

sleeving the machine arm assembly (2) on the connecting end (13) through a fixing opening (211), and rotating a nut (212) to tighten the fixing opening (211);

fixing a load mounting rack (31) of an image acquisition assembly (3) at the bottom of the machine body (1) through a mounting plate (33);

starting the first motor (22) to drive the propeller (24) to rotate;

in the process that the multi-rotor unmanned aerial vehicle ascends to a target place, a steering engine (44) rotates along the ascending direction of the multi-rotor unmanned aerial vehicle to support a carbon tube (43);

when the multi-rotor unmanned aerial vehicle reaches a target place, a second motor (311) drives the load mounting rack (31) to rotate in a plane perpendicular to the ascending direction of the multi-rotor unmanned aerial vehicle, and a third motor (312) drives the tripod head camera (32) to rotate in a plane parallel to the ascending direction of the multi-rotor unmanned aerial vehicle, so that the tripod head camera (32) is aligned with a power transmission line;

after the multi-rotor unmanned aerial vehicle finishes the inspection of the power transmission line, the multi-rotor unmanned aerial vehicle returns to a target place, and the steering engine (44) rotates along the descending direction of the multi-rotor unmanned aerial vehicle to support the carbon tube (44);

after the multi-rotor unmanned aerial vehicle lands on the ground, the first motor (22) is closed.

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